there is at least one active malevolent divine entity in fallout and probably more

the mysterious stranger canonically fucks and is responsible for bringing a fatherless child into the wasteland

in north arizona theres a crater thats just lousy with giant robotic scorpions and animated skeletons and experimental brainless dogs at all hours of every day

in the fallout setting, in denver, people just live in skyscrapers and make bridges to get around because the streets are a constant swarm of snapping, howling feral dogs and thats just how it is there